721,143

3⁴ × 29 × 307

The decimal integer 721,143 is 10110000000011110111 in binary (20 bits), 2600367 in octal and B00F7 in hexadecimal. Its digit sum is 18.

Prime Factor Structure

Factorization String 3^4 × 29 × 307

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 20

Divisor Sum (σ) 1,118,040

Proper Divisor Sum 396,897

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #721141 ← → #721159

Radix Representation

Decimal	721143
Binary	10110000000011110111 (20 bits)
Octal	0o2600367
Hexadecimal	0xB00F7

Divisor Catalog (20)

1 3 9 27 29 81 87 261 307 783 921 2,349 2,763 8,289 8,903 24,867 26,709 80,127 240,381 721,143

Collatz Trajectory (167 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

721,143 2,163,430 1,081,715 3,245,146 1,622,573 4,867,720 2,433,860 1,216,930 608,465 1,825,396 912,698 456,349 1,369,048 684,524 342,262 171,131 513,394 256,697 770,092 385,046 192,523 577,570 288,785 866,356 433,178 216,589 649,768 324,884 162,442 81,221 243,664 121,832 60,916 30,458 15,229 45,688 22,844 11,422 5,711 17,134 8,567 25,702 12,851 38,554 19,277 57,832 28,916 14,458 7,229 21,688 10,844 5,422 2,711 8,134 4,067 12,202 6,101 18,304 9,152 4,576

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